Describe the preparation of 4.70 kg of 12.0% (w/w) aqueous glycerol.
Total mass of solution ( water + glycerol) = 4.70 kg.
Since %(w/w) = (mass of solute/ mass of solution)x100%
Therefore, mass of glycerol required = (12/100)x4.70 kg = 0.564 kg.
Therefore, mass of glycerol 0.564 kg to be mixed with (4.7-0.564 = 4.136 kg) water to form a 12.0%(w/w) aqueous glycerol solution.
Describe the preparation of 4.70 kg of 12.0% (w/w) aqueous glycerol.
An aqueous solution of glycerol, C3H8O3 is prepared by adding 150.0 g of glycerol to 200.0 g of water. What is the mole fraction of glycerol in the final solution? a. 0.571 b. 0.429 c. 0.750 d. 0.872 e. 0.128 NB: the answer is e but how do I do the working out?
An object with mass m1 = 4.70 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2 = 12.0 kg, as shown in the figure. (a) Find the magnitude of the acceleration of each object. a1 = 12 m/s2 a2 = m/s2 (b) Find the tension in the cable.
The alcohol used in the preparation of dynamite is A. ethyl alcohol B. glycerol C. glycol D. methyl alcohol
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In the electrolysis cell used for the industrial preparation of Cl2 from aqueous NaCl, a diaphragm is used to separate the products. Give an equation for the reaction that would occur in the absence of the diaphragm and describe the nature of the reaction.
Glycerol (C3H8O3, 92.1 g/mol) is a nonvolatile nonelectrolyte substance. Consider that you have an aqueous solution that contains 28.8 % glycerol by mass. If the vapor pressure of pure water is 23.8 torr at 25oC, what is the vapor pressure of the solution at 25oC? Enter your answer in units of torr to three significant figures.
A. Describe the preparation of 4.75 liters of 1.55M NaCl from solid NaCl and H2O. (12pts) B. Calculate the % (mass/volume) of a 250.mL aqueous solution, containing 24.0 g of Ba(OH)2
Physical Properties: Water Vegetable oil aqueous NaOH solution Sodium hydroxide ethanol Soap glycerol Saturated Nacl
Two aqueous hydrogen bromide solutions containing 12.0 wt% HBr (SG = 1.0867) and 65.0 wt% HBr (SG = 1.7613) are mixed to form a 3.90 molar HBr solution (SG = 1.1234)What feed rate of the 65.0 wt% HBr solution would be required to produce 1150 kg/hr of productWhat is the feed ratio of liters of 12.0 wt% HBr solution to liters of 65.0 wt% HBr solution?
A ball of mass M = 1.40 kg and radius r = 4.70 cm is attached to one end of a thin, cylindrical rod of length L = 12.0 cm and mass m = 0.880 kg. The ball and rod, initially at rest in a vertical position and free to rotate around the axis shown in the figure below, are nudged into motion. M m (a) What is the rotational kinetic energy of the system when the ball and rod...